Case Presentation: A 72-year-old female never-smoker was admitted for progressive dyspnea, pleuritic chest pain, and non-productive cough after failing outpatient treatment for presumed community-acquired pneumonia based on chest x-ray findings. On arrival, she was afebrile, hemodynamically stable, and breathing comfortably on room air. Physical exam revealed pulmonary crackles and a clean-based ulcer on the lateral [...]